Tung-Sol EL84/6BQ5 Power Tube Quad, Platinum Matched

Tung-Sol EL84/6BQ5 Power Tube Quad, Platinum Matched

Marsoni

M251S

$149.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Tung-Sol EL84/6BQ5 Power Tube Quad, Platinum MatchedThe Tung Sol EL84 6BQ5 tube gained popularity as an OEM tube in American made amplifiers such as those built by Gibson and Harmony. Today, this Tung Sol makes for the most reliable current production EL84 type available for use in Vox AC 30 amplifiers. This tube also works as an ideal replacement for EL84 hi fi amplifiers like those built by Scott, Fisher, and Harmon Kardon.

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I passed my CAPM exam in December 2025. This book helped me understand how all the pieces of the puzzle fit together for the CAPM. I also supplemented with other resources, but this book helped really tie everything together. Read it all and do all the practice quizzes and tests to really get a solid understanding. I'll look for PMP related books by the same author. Very well written and easy to understand.

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Reviewed in the United States on February 14, 2026

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Amazon Customer

Waukegan, US

★★★★★ 5

Buy this one. It is straight to the point!

Format: Paperback

I don't usually write reviews. But this book was amazing. It was a life saver to have me refresh from my masters degree. I read domains three and four. Then I went through about 400 of the practice questions and was able to ace my exam above target in all domains. It is really easy to follow and I will be using it as a stepping stone when it is time to take the PMP exam. Definitely buy this one.

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Reviewed in the United States on August 21, 2025

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Kajur

San Leandro, US

★★★★★ 4

Helped Me Pass the CAPM

Format: Paperback

You need more than this to pass the exam, but this is an excellent study guide and structure. The practice questions are way easier than the actual exam. Don't let them give you a sense of false confidence. Especially if you don't have experience. I recommend to Google project management courses, IBM, or there's another one on Udemy. Use the PMI practice exam, too.

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Reviewed in the United States on December 7, 2025

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Nichole

Los Angeles, US

★★★★★ 5

Helpful study guide

Format: Paperback

Helped me pass the CAPM. Broke material into domains and practice questions after each domain helps to apply the material to scenarios

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Reviewed in the United States on February 11, 2026

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